First Test Chap's 1-5

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Question

Answer

The Application layer provides a set of interfaces for applications to access networked services, such as networked file transfer, message handling, and database query processing. True or False

True

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In the OSI reference model, the ____ layer is layer 4.

Transport

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A frame is usually addressed to only one computer and is called a ____ frame.

unicast

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The PDU at the Transport layer is called a ____.

segment

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The PDU at the Application layer (and the Presentation and Session layers) is referred to simply as “message.” True or False

False

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The PDU at the Network layer is called a ____.

packet

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In the OSI reference model, the ____ layer is layer 7.

Application

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A packet is the basic unit for network traffic as it travels across the medium. True or False

False

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____ functions at the Application layer of the OSI reference model.

HTTP

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In the OSI reference model, the ____ layer is layer 2.

Data Link

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A(n) ____ describes the type of wireless communications used to permit computers to exchange data by some wireless transmission frequency.

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Is SQL Server any of a number of special-function servers? True or False

False

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Which of the following represents the centralized database of users, groups, and resource information that permits one or more network servers to handle network logins and resource access requests?

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Do file and print servers provide ONLY file storage and handle print job on behalf of the WAN? True or False

False

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The mesh network topology is the most expensive one. True or False

True

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On a bus network, open ends in a cable segment must be terminated to prevent ____.

Signal bounce

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The majority of hubs installed in networks today are ____ hubs.

active

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A disadvantage of the ring topology lies in its inability to share network resources fairly.

False

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The first step in any network design is to evaluate the underlying requirements.

True

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A protocol stack is an ordered collection of networking protocols that, taken together, provide end-to-end network communications between a sender and a receiver.

True

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Which of the following refers to data content within a PDU?

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Which of the following is used interchangeably with data frames and is the basic package of bits that represents a PDU sent from one computer to another across a network?

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The IEEE specification within Project 802 for token bus LANs, which uses a straight-line bus topology for the networking medium, is referred to as 802.5.

False

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A practical data unit is a structure that usually includes specific header and trailer information in addition to its data payload.

False

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Which of the following is NOT a method of passing data around a ring network?

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Does a map include the locations of servers, workstations, computers, and so forth?

True

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Which of the following refers to a central device or hub through which signals pass in a wireless network?

WAP

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A hub is a single cable segment used in a bus topology to connect computers in a straight line.

False

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Which of the following uses a token-based networking technology and runs over several kinds of coaxial cable, twisted-pair, and fiber-optic cable?

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Which of the following networks requires an unobstructed view, or clear pathway between the transmitter and receiver?

Line-of-sight

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An orbital position relative to Earth where a satellite orbits at the same speed as the Earth rotates is referred to as which of the following?

Geosynchronous

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Is a network interface connector one of a number of fiber-optic cable connector types?

False

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Computers that participate on a network run a ____ that determines what services that computer can offer or request.

NOS

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____ is the most widely used Web server in the world.

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In the domain model, before users can access resources on the network, they must identify themselves to a(n) ____, which is a server that checks account names and passwords against a database of information it maintains.

domain controller

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Chaos is the norm for ____, and security can be a major concern.

peer-to-peer networks

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Windows Server 2000/2003 includes a complete Web server called ____.

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Is a serial transmission used to set each bit's worth of data one at a time, one after another, in sequence?

False

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Which of the following is a 32-bit PC bus architecture that is backward compatible with older slower 16-bit bus architecture?

EISA

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Which of the following is the 32- and 64-bit PC bus architecture that currently prevails as the best and fastest of all available bus types?

PCI

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PC cards are credit-card size expansion cards used to add functionality to desktop computers.

False

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The maximum cable length for Category 5, 5e and 6 UTP cables is 200 meters.

False

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The 1997 802.16 Wireless Networking Standard is also referred to as Wireless Fidelity (Wi-Fi).

False

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The cable plant is the combination of installed network cables, connectors, patch panels, wall jacks, and other media components.

True

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In the OSI reference model, the ____ layer is layer 1.

Physical

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Domain Name System (DNS) and NetBIOS name resolution both work in part at the ____ layer.

Session

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In the OSI reference model, the ____ layer is layer 3.

Network

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The frame’s destination address of a broadcast frame is a value of all binary 0s.

False

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An attachment unit interface (AUI) is also called a DIX connector.

True

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Which of the following is a hardware device that increases the power of electrical signals to maintain their original strength when transmitted across a large network?

Amplifier

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Which of the following is a fiber-optic connector that provides high-density connections utilizing two fiber-optic cables?

MT-RJ

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Which of the following is a device that bridges wireless networking components in a wired network?

Access point

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Is SQL Server any of a number of special-function servers?

False

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A Web browser is the TCP/IP-based collection of all Web servers on the Internet.

False

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Which of the following represents the centralized database of users, groups, and resource information that permits one or more network servers to handle network logins and resource access requests?

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Does server-based networking require the presence of a server to provide services and resources?

False

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A LAN is a collection of computers and other networked devices that fit within the scope of a single physical network

True

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Which of the following refers to a special or general-purpose microprocessor that appears on an adapter card, usually to offload data from the computer's CPU?

On-board co-processor

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Which of the following is a hot-pluggable Plug and Play serial interface that operates at a maximum data transfer rate of 12 Mbps?

USB

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Is a peripheral component interface (PCI) a 32- and 64-bit PC bus architecture that currently prevails as the best and fastest?

False

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NSID is a standard for providing an interface between a NIC and the network medium that enables a NIC to use multiple protocols.

False

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A device that transmits and receives network information is referred to as a terminator.

False

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Does the protocol stack provide end-to-end network communications between a sender and a receiver?

True

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The Network layer handles addressing and routing of PDUs across the Internet.

False

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Which of the following is an enhanced set of network and transport protocols that carry NetBIOS information?

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Is payday the data content within a PDU?

False

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Elaborated upon by the IEEE Project 802, ___ are the logical link control layers and the media access control layers.

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With respect to data transfer speeds of wireless NICs, the most common choices today are 11 Mbps or ____ Mbps

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ExpressCard uses PCI Express technology to provide data transfer rates up to 500 MBps, with future versions reaching 4 GBps.

True

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Bus mastering means a NIC includes additional memory to provide temporary storage for incoming and outgoing data that arrives at the NIC faster than it can be shipped out.

False

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FireWire is also known as IEEE ____.

1394

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MAC addresses take the form of ____ two-digit hexadecimal numbers separated by colons.

Six

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Windows Server 2003 was designed to handle up to ____ CPUs in a single system

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____ servers handle e-mail messages for network users; this function might involve simply acting as a clearinghouse for local exchange of messages.

Mail

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Peripheral ____ sharing enables groups of users to take advantage of peripherals and other devices attached directly to a network or to a generally available computer attached to a network.

device

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The emerging standard for WPANs is the IEEE ____ standard.

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____ is the most widely used Web server in the world

Apache

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Does a repeater regenerate electronic signals, so they can travel a greater distance?

True

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A hub is a single cable segment used in a bus topology to connect computers in a straight line.

False

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Which of the following is the central connection point for a star network?

Hub

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Fiber Distributed Data Interface is a high-speed WAN technology that uses dual counter-rotating rings.

False

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Which of the following is a network topology in which the computers listen to the data signals being sent but do NOT participate in network communications?

🗑

10BaseT refers to ____.

UTP

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With respect to structured cabling, the ____ is where computer workstations and other user devices are located.

work area

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The TIA/EIA developed the document “____ Commercial Building Wiring Standard”, which specifies how network media should be installed to maximize performance and efficiency.

🗑

Whether STP or UTP, twisted-pair network cabling most commonly uses ____ connectors to plug into computer network interfaces or other networked devices.

RJ-45

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Category ____ cable is labeled as voicegrade

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A packet is the basic unit for network traffic as it travels across the medium.

False

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The IEEE 802 standards predate the OSI reference model.

True

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____ frames are created for any computers on a network that “listen” to a shared network address

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In the OSI reference model, the ____ layer is layer 7.

Application

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The IEEE standard ____ sets standards for wireless networking for many different broadcast frequencies and techniques.

802.11

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A central device, usually a(n) ____, sits in the middle of the extended star topology.

switch

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All computers, no matter what their topology, communicate in the same way: They address data to one or more computers and then transmit that data across the cable in the form of ____.

electronic signals

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When wireless devices are configured to use an access point, they are said to be in ____ mode.

Ad hoc

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The ring-based technologies implemented as a physical star include ____ and token ring

FDDI

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At the center of a logical ring implemented as a physical star is a device called a(n) ____.

concentrator

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In a NIC, ____ are the fundamental unit of data for network transmission and reception. bits segments packets frames

frames

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PnP attempts to define a set of configuration protocols so that a computer can communicate with its peripherals during the ____ sequence and negotiate a working configuration without requiring user intervention. boot up POST IEEE 1394 load

POST

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____ means a NIC’s on-board processor selects a region of RAM on the computer and writes to it as though it were buffer space on the adapter. DMA Shared system memory Shared adapter memory Bus mastering

Shared system memory

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Which of the following layers of the OSI model is responsible for setting up, maintaining, and ending ongoing sequences of communications across a network? Application layer Transport layer Presentation layer Session layer

Session layer

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Wireless NICs can operate at speeds faster than 100 Mbps by using the ____ technology. IEEE 802.11a IEEE 802.11g IEEE 802.11i IEEE 802.11n

IEEE 802.11n

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Which of the following is the functional subdivisions of the OSI reference model? Layers Cylinders Both A and B None of the above

Layers

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Which of the following is a mathematical recipe that generates a specific value called a checksum? CRC CCR RRC None of the above

CRC

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Is AppleTalk the protocol suite/stack native to the Macintosh operating system? True False

False

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A network’s topology has a significant effect on its performance and growth potential. True False

True

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In a(n) ____ topology network, computers and other devices attached to the network regenerate signals and are responsible for moving data through the network. passive active physical logical

Acitve

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At the center of a logical ring implemented as a physical star is a device called a(n) ____. hub switch concentrator access point

concentrator

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In the simplest wireless configuration, two computers can communicate directly with one another in a(n) ____ topology. access point point-to-point infrastructure mode ad hoc

access point

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What a the 7 Layers of the OSI?

Programers - Physical Do - Data Link Not - Network Throw - Transport Sasuage - Session Pizza - Preseantion Away - Applacation

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In the OSI reference model, the ____ layer is layer 4. Session Transport Data Link Network

Transport

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Domain Name System (DNS) and NetBIOS name resolution both work in part at the ____ layer. Session Network Presentation Transport

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The PDU at the Application layer (and the Presentation and Session layers) is referred to simply as “message.” True False

False

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The rules that govern which resources can be accessed by which accounts are referred to as ____. firewalls privileges access controls restrictions

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Most peer-to-peer networks consist of collections of typical end-user PCs linked by a common network medium. True False

True

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A server-based network makes sense when more than ____ users must share network access. 5 10 25 50

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Which of the following is the basic physical layout for a network? Topology Layout Design All of the above

All of the above

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Which of the following is NOT a term used to describe a networks design? Mesh Layout Diagram None of the above

None of the above

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Does a bus topology use a backbone to connect computers in a straight line? True False

False

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Geosynchronous is an orbital position relative to the moon where a satellite orbits at the same speed as the moon rotates. True False

False

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Electromagnetic interference is the ability to "listen" to signals passing through some communications medium by detecting its emissions. True False

False

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An attachment unit interface (AUI) is also called a DIX connector. True False

True

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Which of the following is a term which describes the requirement that narrow band, tight-beam transmitters and receivers have an unobstructed path between them? Latency of sight Local sight Mobile sight None of the above

None of the above

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____ is a set of access controls or permissions in place that determine whether the server can grant requests for service or resource from a client. Protocol Response Security Sidebanding

Response

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An application server is a network server that acts ONLY as a server and is NOT intended for regular use as a client machine. True False

True

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Which of the following would be considered an example of a specialized server? Communication server Directory server Domain controller All of the above

All of the above

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Internet Information Server is a Microsoft BackOffice component that acts as a Web server in the ____ server environment. Windows 2000 Windows XP Windows NT Windows 95

Windows NT

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With respect to structured cabling, the ____ houses servers, routers, switches, and other major network equipment and serves as a connection point for backbone cabling running between TCs. work area cable plant equipment room entrance facility

equipment room

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Category ____ cable is labeled as datagrade. 1 2 3 4

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Fiber-optic cable eliminates the possibility of electronic eavesdropping. True False

True

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Category ____ cable is labeled as voicegrade. 1 2 3 4

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A device driver is a software program that mediates communications between an operating system and a specific device. True False

True

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Is Quality of Session a networking term that specifies a guaranteed level of service applied to applications that require high bandwidth? True False

False

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Which of the following refers to a mathematical notation for representing numbers in base 16? Hexadecimal Peridecimal Tridecimal Quad-decimal

Hexadecimal

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Which of the following is a feature that allows the card to handle security related protocols including encryption services? Shared feature Security feature Transceiver feature Traffic feature

Sercurity feature

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Which of the following refers to the Microsoft requirements for PC motherboards, buses, adapter cards, and operating systems which let a PC automatically detect and configure hardware on a system? Plug and Play Patch and Play Link and Play

Plug and Play

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Presentation layer

preps data for delivery

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Application layer

is an interface that request and receives network services

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Data Link layer

manages access for error-free delivery

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Network layer

does addressing and routing

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Physical layer

medium cables and wires

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Session layer

setup and maintain communications

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Transport layer

delivery of data completely

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An intranetwork is a network of networks, which consists of two or more physical networks. True False

False

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Do file and print servers provide ONLY file storage and handle print job on behalf of the WAN? True False

False

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Which of the following is a uniquely named collection of user accounts and resources that share a common security database? Controller Dedicated server Domain None of the above

Domain

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Does a network medium usually refer to the cable that links computers on a network? True False

False

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To access any network, computers must attach to the network medium by using some kind of physical interface; for PCs, this interface is usually an RS-232 port. True False

False

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____ servers handle e-mail messages for network users; this function might involve simply acting as a clearinghouse for local exchange of messages. Mail Communication RRAS File

Mail

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____ servers supply the server side of client/server applications, and often the data that goes along with them, to network clients. Application File Web Directory

Application

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The ____ is a short-range networking technology designed to connect personal devices to exchange information. LAN NOS WPAN PDA

WPAN

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10BaseT refers to ____. TP UTP STP ScTP

UTP

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Spread-spectrum radio addresses several weaknesses of single-frequency communications, whether high or low power. True False

True

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Whether STP or UTP, twisted-pair network cabling most commonly uses ____ connectors to plug into computer network interfaces or other networked devices. BNC MT-RJ RJ-45 RJ-11

RJ-45

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Fiber Distributed Data Interface is a high-speed WAN technology that uses dual counter-rotating rings. True False

False

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Which of the following is the central connection point for a star network? Hub Map Repeater Token

Hub

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A hub is a single cable segment used in a bus topology to connect computers in a straight line. True False

False

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Which of the following is NOT a method of passing data around a ring network? Token passing Token Terminator None of the above

None of the above

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The PDU at the Transport layer is called a ____. message segment frame packet

segment

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In the OSI reference model, the ____ layer is layer 4. Session Transport Data Link Network

Transport

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In the OSI reference model, the ____ layer is layer 2. Physical Presentation Data Link Network

Data Link

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A packet is the basic unit for network traffic as it travels across the medium. True False

False

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Is Quality of Session a networking term that specifies a guaranteed level of service applied to applications that require high bandwidth? True False

False

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A parallel transmission is the technique of spreading individual bits of data across multiple, parallel lines to transmit them simultaneously. True False

True

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Is a peripheral component interface (PCI) a 32- and 64-bit PC bus architecture that currently prevails as the best and fastest? True False

False

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Fault tolerance is a system feature that allows it to continue working after an unexpected hardware or software failure. True False

False

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Which of the following refers to a mathematical notation for representing numbers in base 16? Hexadecimal Peridecimal Tridecimal Quad-decimal

Hexadecimal

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A vampire tap is an apparatus with a set screw on the upper half that permits the pointed end of the screw to penetrate thickwire coax to a precise depth, where it taps into the center conductor without breaking it. True False

True

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Which of the following is a variety of TCP cable, wherein a foil wrap encloses each one or more pairs of wire for additional protection? Twisted-pair Fiber-optic Shielded twisted-pair Sheath-pair

Shielded twisted-pair

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A woven mesh of metallic wires, usually either copper or steel, wrapped around the outside of one or more conductive cables is referred to as braiding. True False

True

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Signals on a bus generated by the signal bounce effect significantly reduce the performance, but do not render computer communication on the bus network unworkable. True False

False

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Because of the ____ phenomenon, a method to ensure that all signals stop when they reach the end of any segment in a bus topology must be devised. signal bounce signal propagation cable termination cable breaks

signal bounce

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In the simplest wireless configuration, two computers can communicate directly with one another in a(n) ____ topology. access point point-to-point infrastructure mode ad hoc

access point

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On a bus network, open ends in a cable segment must be terminated to prevent ____. signal propagation cable breaks signal bounce cable termination

signal bounce

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When purchasing a NIC for a server, you should choose ____-bit PCI-X or PCIe when possible. 8 16 32 64

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One of the most important jobs a NIC performs is to take outgoing transmissions from the CPU in serial form and recast them into their parallel equivalents. True False

False

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Which of the following layers of the OSI model is responsible for managing access to networking medium and for ensuring error-free delivery of data frames from sender to receiver? Presentation Application Data Link None of the a

Data Link

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